Source Code Cross Referenced for DiscFactory.java in  » Database-ORM » tro-community-7.2-1 » discRack » business » disc » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database ORM » tro community 7.2 1 » discRack.business.disc 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Enhydra Java Application Server Project
003:         *
004:         * The contents of this file are subject to the Enhydra Public License
005:         * Version 1.1 (the "License"); you may not use this file except in
006:         * compliance with the License. You may obtain a copy of the License on
007:         * the Enhydra web site ( http://www.enhydra.org/ ).
008:         *
009:         * Software distributed under the License is distributed on an "AS IS"
010:         * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
011:         * the License for the specific terms governing rights and limitations
012:         * under the License.
013:         *
014:         * The Initial Developer of the Enhydra Application Server is Lutris
015:         * Technologies, Inc. The Enhydra Application Server and portions created
016:         * by Lutris Technologies, Inc. are Copyright Lutris Technologies, Inc.
017:         * All Rights Reserved.
018:         *
019:         * Contributor(s):
020:         *
021:         * $Id: DiscFactory.java,v 1.1 2004/09/03 13:41:25 sinisa Exp $
022:         */
023:
024:        package discRack.business.disc;
025:
026:        import discRack.business.DiscRackBusinessException;
027:        import discRack.data.disc.*;
028:        import com.lutris.dods.builder.generator.query.*;
029:        import discRack.business.person.*;
030:        import discRack.data.person.PersonDO;
031:        import com.lutris.appserver.server.sql.ObjectId;
032:
033:        import java.util.*;
034:
035:        /**
036:         * Used to find the instances of disc.
037:         */
038:        public class DiscFactory {
039:
040:            /**
041:             * The findDiscsForPerson method performs a database query to
042:             * return an array of <CODE>Disc</CODE> objects
043:             * representing all the rows in the <CODE>disc</CODE> table
044:             * that have and owner matching <CODE>Person owner</CODE>.
045:             *
046:             * @param owner. The owner of the discs
047:             * @return
048:             *     array of discs.
049:             * @exception DiscRackBusinessException
050:             *   If there is a problem retrieving disc information.
051:             */
052:            public static Disc[] findDiscsForPerson(Person owner)
053:                    throws DiscRackBusinessException {
054:                Disc[] theDiscArray = null;
055:
056:                try {
057:                    DiscQuery query = new DiscQuery();
058:                    //set query
059:                    query.setQueryOwner(PersonDO.createExisting(owner
060:                            .getHandle()));
061:                    // Order discs alphabetically by artist
062:                    query.addOrderByArtist();
063:                    DiscDO[] DOarray = query.getDOArray();
064:                    theDiscArray = new Disc[DOarray.length];
065:                    for (int i = 0; i < DOarray.length; i++)
066:                        theDiscArray[i] = new Disc(DOarray[i]);
067:                } catch (Exception ex) {
068:                    throw new DiscRackBusinessException(
069:                            "Exception in findDiscsForPerson()", ex);
070:                }
071:                return theDiscArray;
072:            }
073:
074:            /**
075:             * The findDiscByID method performs a database query to
076:             * return a <CODE>Disc</CODE> object
077:             * representing the row in the <CODE>disc</CODE> table
078:             * that matches the object id.
079:             *
080:             * @param id, the object id of the disc table.
081:             * @return
082:             *    the disc. null if there isn't a person associated
083:             *    the id
084:             * @exception DiscRackBusinessException
085:             *    if there is a problem retrieving person information.
086:             */
087:            public static Disc findDiscByID(String id)
088:                    throws DiscRackBusinessException {
089:                Disc theDisc = null;
090:
091:                try {
092:                    DiscQuery query = new DiscQuery();
093:                    //set query
094:                    query.setQueryOId(new ObjectId(id));
095:                    // Throw an exception if more than one user by this name is found
096:                    query.requireUniqueInstance();
097:                    DiscDO theDiscDO = query.getNextDO();
098:                    theDisc = new Disc(theDiscDO);
099:                    return theDisc;
100:                } catch (Exception ex) {
101:                    throw new DiscRackBusinessException(
102:                            "Exception in findDiscsForPerson()", ex);
103:                }
104:            }
105:        }
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